Hey there, @LaurentDB! Thanks for sharing those extra details!
I did some digging and it appears you're running into a know bug with the Zapier Chrome extension where as you mentioned it’s no longer pulling in real samples. I've added you as an affected user to the bug report. While I don't have an ETA on a fix, this is the best way to stay informed as it ensures you'll be emailed at that time!
We'll also be sure to keep the main thread updated with any available workarounds or news. 👇🏽:
https://community.zapier.com/troubleshooting-99/push-trigger-custom-input-in-chrome-extension-not-visible-when-testing-or-running-newly-loaded-push-19058
In an effort to streamline communication I'll be closing this thread. If you'd like community status updates I'd recommend subscribing to that thread.
Sorry to not have better news but we appreciate you raising this in community!